<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8" />
    <title>首页</title>
    <style type="text/css">
        * {
            margin: 0;
            padding: 0;
        }

        .top {
            width: 100%;
            height: 40px;
            background-color: #333;
        }
        .nav {
            width: 1224px;
            height: 100px;
            background-color: #ff6700;
            margin: 0 auto;
        }
        .banner {
            width: 100%;
            height: 100px;
            background-color: pink;
        }
        .foot {
            width: 100%;
            height: 200px;
            background-color: #ccc;
        }
    </style>
</head>
<body>
    <div class="top">666</div>
    <div class="nav"></div>
    <div class="banner"></div>
    <div class="foot"></div>
</body>
</html>